I installed Arch the Archway once on my old laptop, just to learn the standard procedure. At the moment, I don't see any reason for myself (other than learning) to use bare Arch over EndeavourOS, which is very close to it, but with some bells and whistles and some pre configurations. Which does not mean others have no reason, I just talk for myself.

Also Arch nowadays have an installer script on the terminal, which makes things easier, but I never used it. I see it as a stopover between Calamares and manual Archway installation.